ALGEBRA
Jim began a 281​-mile bicycle trip to build up stamina for a triathlete competition.​ Unfortunately, his bicycle chain​ broke, so he finished the trip walking. The whole trip took 7 hours. If Jim walks at a rate of 3 miles per hour and rides at 43 miles per...August 22, 2016

History
MS. SUE PLEASE HELP ME! SOCIAL STUDIES QUESTION? So I am trying to write two articles and am NOT asking you to write them for me, just for help so I can write them. It's about the French and Indian war. I know that they were fighting and why, but what caused both of them ...June 1, 2016

Social Studies
So I am trying to write two articles and am NOT asking you to write them for me, just for help so I can write them. It's about the French and Indian war. I know that they were fighting and why, but what caused both of them to get into the war? Like I need to write two ...June 1, 2016

mATH
noooooo both of yall are wrong i have to 100% right answers 1.D 2.C 3.C 4.B 5.D 6.A 7.A 8.This is a true because a diameter is a straight line connecting two points on the circumference of a circle. Every diameter of a circle is a chord.February 8, 2016

chemistry
Under SATP, magnesium was reacted with acid and 500 ml of hydrogen gas was collected over water. A) what is the vapor pressure of water? B) What is the pressure of the hydrogen gas? C) What amount of hydrogen was produced? I only know how to do the law of partial pressures and...January 18, 2015

chemistry
Liquid water has a specific heat of 4.184 J/g degrees celcius. If 50 grams of water is heated from10 to 55 degrees celcius, what is the heat energy in joules needed to heat this waterNovember 5, 2012

BIOLOGY D:
Many medications used to treat human illnesses are based on substances found in other organisms. How might a decrease in biodiversity affect medical discoveries and treatments.? :oSeptember 5, 2011

Ag Bio 1
In general, greater biodiversity exists closer to Earth's equator than in areas closer to Earth's poles. What does this mean in terms of the number of species that are found in these regions? Please help, they might as well have been speaking Japanese D:September 1, 2011